General Information:
Chemical Formula:Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4·12(H2O)
Composition:(Molecular Weight = 1,233.18 gm)Calcium 13.00 %
CaMagnesium 1.97 %
MgAluminum 2.19 %
AlIron 13.59 %
FePhosphorus 15.07 %
P Hydrogen 2.29 %
H Oxygen 51.90 %
O Empirical Formula: ·12(H2O)Ca4MgFe3+3Al(PO4)6(OH)4
Environment:Found in a bed of Tertiary clay. The Fe-analog of montgomeryite.
Locality:Battenberg, Bavaria, Germany.
Name Origin:Named for its compostion.
Physical Properties: Cleavage:[???] Perfect, [???] Very Good
Color:greenish yellow, yellow, yellow green, or yellowish white.
Density:2.53
Diaphaniety:Translucent to Opaque
Habits:Foliated - Two dimensional platy forms., Reniform - "Kidney like" in shape (e.g.. hematite).,
Hardness:2.5 - Finger Nail
Luster:Pearly
Streak:yellowish white
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